含丙烯酸的苯丙共聚乳液乳胶粒形态的电镜研究  

The Morphology Study of Latex Particles of Sty rene-Acrylate Copolymer Containing Acrylic Acid

作　　者：刘凤岐[1] 刘正平[1] 李志英[2] 汤心颐[1] 

机构地区：[1]吉林大学化学系,长春130023 [2]吉林工业大学应用化学系

出　　处：《高等学校化学学报》1993年第3期417-420,共4页Chemical Journal of Chinese Universities

摘　　要：采用透射电镜观测了苯乙烯-丙烯酸丁酯-丙烯酸乳液共聚体系的乳胶粒形态,讨论了组分含量、共聚物链柔性和乳液pH值等因素对乳胶粒形态、乳液粘度及成膜性的影响.结果表明:软单体的加入和体系pH值的提高将促进乳胶粒的粘连成膜和溶涨及部分聚合物的溶解.羧基主要富集于乳胶粒表面.The morphology of latex particles of acrylic acid/butyl acrylate/styrene copolymer emulsion have been examined by transmission electron microscopy (TEM). The effect of copolymer composition , flexible segment and acidity adjusted with aqueous ammonia of the systems on the morphology of latex particles has been discussed. The morphology of soft latex particles was observed successfully by TEM after using phosphotungstic acid (PTA) served as support and a negative stain. In an usual condition , the state of film-forming copolymer existence was supposed.

关 键 词：乳胶粒 苯丙共聚物 丙烯酸 

分 类 号：O648.23[理学—物理化学]